JPH0385847A - Cordless telephone set - Google Patents

Abstract

PURPOSE:To reduce power consumption and to shorten the charging time by avoiding the supply of power to a receiver during awaiting a call in charging of a battery. CONSTITUTION:When a charging supply section 18 of a master set 1 charges a power supply 31 of a slave set 2 by connecting charging terminals 43, 44 and control data terminals 41, 42, it is detected that the charging detection sections 19, 29 of the master set 1 and the slave set 2 are being charged respectively. On the other hand, when a control means 25 of the slave set 2 sets the reception mode into the consecutive halt mode and receives an incoming call data from the master set 1, the reception mode is changed into the consecutive reception mode and the radio connection mode through an idle channel CH informed from the master set 1 is selected. Thus, since no power is supplied to the receiver during charging and awaiting an incoming call, the power consumption is less and the charging time is reduced.

Description

[Detailed description of the invention] <Industrial application field> This invention relates to cordless telephones.

<Prior Art> Generally, a cordless telephone uses a rechargeable secondary battery as a power source for a handset, and performs intermittent reception operation in order to reduce the consumption of this battery. In other words, it supplies power to the entire reception system and stands by in a state where it can receive radio waves from the base unit, and cuts power supply to all but the minimum necessary circuits such as timers to minimize power consumption. The pause operation, which is suppressed to a small amount, is repeated alternately.

Conventionally, this type of cordless telephone uses a multi-channel access (MCA) method to communicate between a base unit and a handset using a control channel (hereinafter abbreviated as CI) and a call CH. There is something I decided to do.

FIG. 4 and FIG. 5 respectively show the incoming call control procedure and the outgoing call control procedure of the above-mentioned conventional cordless telephone.

In the incoming call procedure shown in Figure 4, the base unit normally uses idle call C.
Repeated operations of H search and control CH reception are performed.

That is, one or more calls Cl-1 that are currently in the room are stored for use during a call, and while waiting for a calling signal from the handset at the control OH, the above-mentioned storage is performed intermittently for a short time. The user repeatedly goes to check the current status of the idle call channel. On the other hand, the handset performs the above-described intermittent reception operation on the control CH.

Now, when a ringing signal (16Hz) is input from the exchange to the base unit, the base unit detects the incoming call, first detects an empty control channel, and then sends the incoming call signal to the slave unit on the vacant control channel. do. When the slave unit detects an incoming call signal, it transmits an incoming call response signal to the base unit. When the lJ device detects an incoming call response signal from the handset, it switches CI-( to the designated call CH and checks if that call CH is free. Similarly, the handset switches the CH to the designated call C■1. After switching and confirming the availability of the call channel, the CI (switching completion signal is sent to the base unit.
When the base unit detects this CH switching completion signal, the calling CH is determined. Once the call channel is confirmed, the bell ringing signal,
Call CH that transmits the audio circuit ON signal in off-hook state
Enter the mode.

On the other hand, in the outgoing call control procedure shown in FIG.
Repeated reception operation is performed, and the slave unit is controlled by control Cl-1.
Intermittent reception is being performed. Now, when the handset goes off-hook, it detects a free control channel and selects the free control channel.
to send a calling signal to the base unit. When the base unit detects this call signal, it transmits a call response signal to the slave unit, switches the channel to the designated call Ci-[, and checks whether the call CH is vacant.

When the slave unit detects a call response signal from the base unit, C[(
is switched to the designated call CH, and after checking the availability of that call CH, a CH switching completion signal is sent to the base unit.Then, when the base unit detects this CI4 switching completion signal, the call C)
(is determined. Once the call CH is determined, the call CH mode is entered in which the audio circuit ON signal, dial tone, and dial signal are transmitted.

<Problems to be Solved by the Invention> By the way, in the above-mentioned conventional cordless telephone, when performing an intermittent reception operation, for example, when performing a standby operation of 100 m 1 sec and a rest operation of 900 m 5 ec alternately, the up to 9 for calls of
There is a problem that O0m5ec non-response time occurs and connection time is long. On the other hand, if continuous reception is performed to shorten the connection time, there is a problem in that the battery is consumed more and the life of the battery is shortened, and if it is being charged, the charging time becomes longer. Furthermore, when a wireless CH is connected, the lock time of the receiving PLL synthesizer, the CH free detection time, the lock time of the transmitting PLL synthesizer, and the data signal exchange time are integrated at the control CH stage, and then the channel is switched to a call CH. There is a problem in that it takes a long time to complete the process, and furthermore, when the control CH is busy, transmission cannot be performed until it becomes free, which further increases the connection time.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cordless telephone that can shorten connection time, reduce consumption of an i-cell battery, and shorten charging time.

<Means for Solving the Problems> In order to achieve the above object, the present invention comprises a base unit connected to a telephone line, and a slave unit wirelessly connected to the base unit. Multi-CH access (
MCA) method, communication is performed using the control CH and the call CI-1, while the slave unit has a rechargeable power source, and the base unit has a charging power supply unit for charging the i source. The base unit and the slave unit can be connected via charging terminals provided on each of the base unit and slave unit, and can be charged by the charging power supply unit via the charging terminals. In a cordless phone that is charged with a power source,
A control data terminal for transmitting, to each of the base unit and the slave unit, free call CH data indicating which call channel is free and incoming call data indicating that there is an incoming call from the base unit to the slave unit; a charging detection unit connected to the charging terminal and detecting whether the rechargeable power source is charging;
When the base unit detects that the charging detection unit of the base unit is charging, and after transmitting the idle call CH data to the slave unit via the control data terminal, when an incoming call is received, The above-mentioned incoming call data is transmitted to the above-mentioned slave unit via the above-mentioned control data terminal, and the wireless connection mode in the idle call OH indicated by the above-mentioned idle call CH data is selected, and the charging detection section of the base unit is charging. A control means is provided that selects a wireless connection mode on the idle call channel when the above-mentioned idle call channel is no longer detected, and when the charging detection section of the above-mentioned handset detects that it is being charged, the After setting the mode to continuous pause operation mode, when receiving incoming data from the base unit, or when the charging detection section of the slave unit no longer detects that charging is in progress, the reception mode changes to continuous reception mode. The present invention is characterized in that it is provided with a control means for changing the mode and selecting a wireless connection mode on an idle channel notified from the base unit.

<Function> Normally, while waiting for an incoming call, the handset is connected to the base unit and the power of the handset is charged. In this way, when the charging terminals and control data terminals are connected together and the charging power supply part of the parent unit is charging the power supply of the slave unit, the charging detection parts of the parent unit and the slave unit are respectively charging. detect that it is inside. Then, the control means of the base unit transmits the idle call CH data to the slave unit via the control data terminal, and then transmits the incoming call data to the slave unit via the control data terminal when there is an incoming call, and also transmits the idle call CH data to the slave unit via the control data terminal. CI (Selects the wireless connection mode on the idle call channel indicated by the data. On the other hand, when the control means of the handset sets the receiving mode to the continuous pause operation mode, and receives incoming data from the base device, , change the reception mode to continuous reception operation mode and select the wireless connection mode in the idle call CF (4") notified from the base unit. Therefore, while charging and waiting for an incoming call, the receiver is powered off. Since no power is supplied, power consumption is reduced and charging time is shortened.Furthermore, when there is an incoming call, the handset enters continuous reception mode, so there is no non-response time as in the conventional case. , the connection time is shortened because the wireless connection mode is directly entered on the idle communication channel without performing communication on the control CH.

On the other hand, if the handset is removed from the base unit while charging and waiting for an incoming call, the charging detection sections of the base unit and handset will no longer detect charging.

Then, the control means of the base unit selects the wireless connection mode on the above-mentioned free call CH, while the control means of the slave unit changes the reception mode to the continuous reception operation mode and selects the wireless connection mode on the above-mentioned free call CH. do. Therefore, even when the slave unit is removed from the base unit for transmission, the connection time is shortened because the wireless connection mode is directly entered on the idle communication channel without performing communication on the control CH.

Note that when the handset is separated from the base unit and not being charged, the handset operates intermittently.

<Example> Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

FIG. 1 is a block diagram showing the circuit configuration of an embodiment of a cordless telephone according to the present invention.

This cordless phone consists of a base unit 1 and a handset 2.
When the handset 2 is placed on the base unit 2, the control data terminals 41, 42, charging terminals 43, 44, and ground terminals 45, 46 provided on the base unit I and handset 2 are connected to each other. It has become.

The above-mentioned main unit (■) includes a wired telephone unit 11 connected to the office line 3, a control unit 12 that controls the entire device, a receiving unit t3, a receiving synthesizer unit 14, and a transmitting synthesizer unit 15.
and a transmitter 16. In addition, a power supply unit 17 connected to an AC 100V power supply, a charging power supply unit 18 for supplying charging power to the power battery of the handset 2, and a charging power supply unit 18 are provided.
The control unit 12 detects the current and sends a signal indicating whether or not charging is in progress.
It is equipped with a charge detection section 19 that outputs an output to.

The handset 2 also includes a transmitting section 21, a transmitting synthesizer section 22, a receiving synthesizer section 23, and a receiving section 24.
, a control section 25 for controlling the entire device, a microphone section 26 , a key section 27 , and a speaker section 28 . Also,
a charging detection section 29 connected to the charging terminal 44 to detect a charging voltage and outputting a signal indicating whether charging is in progress to the control section 25; and a charging circuit connected to the charging terminal 44 to charge the battery section 31. It is equipped with 30.

FIGS. 2 and 3 respectively show the incoming call control procedure and the outgoing call control procedure of the cordless telephone of this embodiment.

In the call receiving procedure shown in FIG. 2, during the standby operation, the base unit 1 normally performs repeated operations of searching for an idle call CH and receiving a control CH. That is, one or more currently available call channels are stored for use during a call,
While waiting for a call signal from handset 2 on the control CH, it repeats intermittently for a short time to check the current state of the stored idle call Ci (for example, 9).
00m5ec control CH reception and 100isec idle call CL (inspection is repeated alternately.Meanwhile, the handset performs the above-mentioned intermittent reception operation on the control CH.

Now, when the handset 2 is connected to the main unit 1 and charged, the charging detection parts 19.29 of the main unit 1 and the handset 2 each detect that charging is in progress, and the controller 12.25 respectively detects that charging is in progress. Let me know. Then, after transmitting data from the control unit 12 to the control unit 25 of the slave unit 2 via the control data terminals 4I and 42, the base unit 1 stops receiving the control CH and transmits the idle call C1-( It only searches and sends free call CH data to handset 2. On the other hand, handset 2
When receiving free call CH data from
is stored, the intermittent reception operation on the control CH is stopped, and the control unit 2
5 is in operation, but the receiving section 24 and the receiving synthesizer section 23 are in a suspended operation state during charging, in which power is not supplied.

During this standby operation during charging, a call signal (1
6 Hz) is input to the base unit 1, the base unit 1 detects an incoming call using the incoming call detection unit in the wired telephone unit 11, and outputs the fact that there is an incoming call to the control unit 12. When the control unit 12 detects an incoming call, it transmits the incoming call data to the control unit 25 of the handset 2 via the control data terminals 41 and 42, and, prior to transmitting radio waves, allows the handset 2 to receive the call on a designated idle channel. On the other hand, handset 2 stops charging pause operation as soon as it detects incoming call data, and shifts to continuous reception operation.Then, before transmitting radio waves, it starts the specified call CT. After receiving the call on CH and confirming that the call CI-1 is free, it emits radio waves and transmits a CH switching completion signal to the base unit.Base unit I detects this CH switching completion signal and starts the call CI-1.
H is confirmed. In this series of operations, the wireless control CH is not used.

Once the call CH is determined, the call CH mode is entered in which a bell ringing signal, an off-footer signal, and an audio circuit ON signal are transmitted, as in the conventional example shown in FIG.

On the other hand, in the call control procedure shown in FIG. 3, the operation up to picking up the charging handset 2 from the base unit 1 is the same as in the call reception control procedure shown in FIG. Now, if you pick up the charging handset 2 while it is in standby mode while charging, the main unit L and handset 2 will be connected to each other.
The charging detection units 19 and 29 are fully charged! OFF is detected and the respective controllers 12 and 25 are notified of this. When the control unit 12 of the main unit 1 detects that charging has changed from charging to OFF, it performs reception on the free call CH specified for the handset 2 and checks the free call CI (before transmitting radio waves). On the other hand, when the handset 2 detects that charging has changed from charging to OFF, it stops the pause operation during charging and shifts to continuous reception operation.Then, before transmitting radio waves, reception is performed on the designated call channel. , after confirming the availability of the call CH, sends out radio waves and sends a CH switching completion signal to base unit L. Base unit L detects this CH switching completion signal and switches to call C.
H or confirmed 4-ru. This series of operations also does not go through the radio control CH.

Once the call CH is determined, the system enters the call CH mode in which the audio circuit ON signal, dial tone, and dial signal are transmitted, as in the conventional example shown in FIG.

Note that when the slave unit is not placed in the base unit and is not being charged, the operation is performed according to the incoming call control procedure shown in FIG. 4 and the outgoing call control procedure shown in FIG. 5, similarly to the conventional example.

In this way, while the handset 2 is being charged by the base unit I, the base unit sends idle call CH data to the handset through the control data terminals 41 and 42, and when there is an incoming call, the base unit 1 transmits the data to the control data terminal. 41.42, the handset I is placed in a continuous receiving operation state, so there is no non-response time as in the conventional example, and
Since the connection operation is performed directly on the call CH without going through the control CH, the connection time becomes faster. Furthermore, while charging, the handset is in a charging hibernation mode, and although the control unit 25 is operating, power is not supplied to the receiving unit 24 and receiving synthesizer unit 23, reducing power consumption and reducing charging time. Can be shortened.

<Effects of the Invention> As is clear from the above, in the cordless telephone of the present invention, when the power supply of the handset is being charged by the charging power supply unit of the base unit, the base unit transmits idle call CH data to the handset. When there is an incoming call, the incoming call data is transmitted to the handset and the free call CH indicated by the above free call CH data is transmitted.
After selecting the wireless connection mode in , the handset changes the reception mode to continuous pause operation mode, and then changes the reception mode to continuous reception when it receives incoming data from the base unit or when it is no longer charging. At the same time as changing to the operating mode, the wireless connection mode is selected on the free call channel notified by the base unit, so power is not supplied to the receiver while it is charging and waiting for an incoming call. Less consumption and therefore shorter charging time. In addition, if a call is received while charging, the handset enters continuous reception operation mode, so there is no non-response time as in the conventional example, and there are four free call channels that communicate directly with the control CI. Since it enters wireless connection mode, the connection time will be shorter. Furthermore, even when the slave unit is removed from the base unit for transmission, the connection time is shortened because the wireless connection mode is directly entered on the idle communication channel without performing communication on the control CH.

[Brief Description of the Drawings] Figure 1 is a block diagram showing the circuit configuration of one embodiment of the present invention, Figure 2 is a diagram showing the incoming call control procedure in the above embodiment, and Figure 3 is the outgoing call control in the above embodiment. Diagrams showing the steps,
FIG. 4 is a diagram showing the incoming call control procedure in the conventional example, and FIG. 5 is a diagram showing the outgoing call control procedure in the conventional example. DESCRIPTION OF SYMBOLS 1... Base unit, 2... Slave unit, 12.25... Control unit, 1324... Receiving unit, 16.21... Transmitting unit, 18.
・Charging power supply section, 1.9.29... Charging detection section, 30
... Charging circuit, 31...1 is oil part, 41.42...
・Control data terminal, 43.44... Charging terminal. Patent license applicant

Claims (1)

[Claims] (1) Consists of a base unit connected to a telephone line and a slave unit wirelessly connected to the base unit, and between the base unit and the slave unit,
The multi-channel access (MCA) method uses control channels and speech channels to communicate, while
The slave device has a rechargeable power source, and the parent device has a charging power supply section for charging the power source, and the parent device and the slave device are provided in each of the parent device and the slave device. In the cordless telephone, the cordless telephone is connected via a charging terminal, and the charging power source unit charges the rechargeable power source via the charging terminal, and the base unit and slave unit each have the base unit connected to the cordless phone. a control data terminal for transmitting free call channel data indicating which call channel is free and incoming call data indicating that an incoming call has been received from the device to the handset; and a power source connected to the charging terminal and capable of being charged. is provided with a charging detection unit that detects whether the unit is being charged, and transmits the vacant call channel data to the base unit via the control data terminal when the charging detection unit of the base unit detects that the unit is charging. After transmitting the data to the handset, when an incoming call is received, the incoming call data is transmitted to the handset via the control data terminal, and the wireless connection mode is set on the empty call channel indicated by the empty call channel data. control means is provided to select a wireless connection mode in the vacant call channel when the charging detection section of the base unit no longer detects that charging is in progress, and the slave unit is configured to detect charging of the slave unit. When the unit detects that it is charging, the receiving mode is set to continuous pause operation mode, and then when receiving incoming data from the base unit,
Alternatively, when the charging detection section of the handset no longer detects that it is being charged, change the reception mode to continuous reception operation mode and select the wireless connection mode on the free call channel notified by the base unit. A cordless telephone characterized in that it is provided with a control means for controlling.